Abstract

Women’s upper body changes with age are categorized and analyzed. The researchers validated shape-related measurement variables, extracted principal components, and classified the shapes of 423 women ages 40–69 using 3 D body scans from the CAESAR database. Shape and posture differences were quantified according to four age groups based on 47 measurements processed into 27 shape-related variables; six principal components (i.e. acromion inclination, upper body slope, neck inclination, shoulder angle, upper back curvature, and back protrusion height) were identified. Acromial inclination, shoulder angle, and back protrusion height did not change with age, but upper back curvature increased after age 45, and the slope of the upper body inclined further forward after age 50. The neck demonstrated a more pronounced incline after age 55. The 50–69 group exhibited the greatest upper body slope and the largest back curvature. The 40–44 group showed the most backward shoulder point and the highest shoulders.

摘要

对女性上身随年龄的变化进行了分类和分析。研究人员使用来自 CAESAR 数据库的 3D 身体扫描验证了与形状相关的测量变量，提取了主成分，并对 423 名 40-69 岁女性的形状进行了分类。根据处理成 27 个形状相关变量的 47 个测量值，根据四个年龄组对形状和姿势差异进行量化；确定了六个主要成分（即肩峰倾斜度、上身倾斜度、颈部倾斜度、肩角、上背部曲率和背部突出高度）。肩峰倾角、肩角、后突高度不随年龄变化，但45岁后上背部曲率增加，50岁后上身斜度进一步前倾。55岁后颈部倾斜更为明显。50-69 组表现出最大的上身坡度和最大的背部弯曲度。40-44组的肩点最靠后，肩点最高。